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ce valori ale lui n satisfac inegalitatea: 25<_ 20+n+2<29?

Răspuns :

[tex]25 \leq 20+n+2\ \textless \ 29[/tex]
[tex]25 \leq 22+n\ \textless \ 29[/tex]
[tex]25-22 \leq n\ \textless \ 29-22[/tex]
[tex]3 \leq n\ \textless \ 7[/tex]

n∈[3, 7)